mccammon



(No Model.)

E. MGCAMMON.

Action Hanger forfUprght Piano Fortes.

Patented Dec. 14,1880L N. FETERS. PMOT0-LITHOGRAPHR WASH NGTDN D CUNITED STATES PATENT OFFICEo EDWARD MGGAMMON, OF ALBANY, NEW YORK.

ACTION-HANGER FOR UPRIGHT PIANO-FORTES.

SPECIFICATION forming part of Letters Patent No. 235,370, dated December14, 1880.

Application filed July 6, 1880. (No model.)

To all whom it may concern Be it known that I, EDWARD McUAMMoN, ot' thecity and county of Albany, and State ot' New York, have invented certainnew and useful Improvements in Upright Piano-Fortes, of which thefollowing is a full and exact description, reference being had to theaccompanying drawings, making a part of this speciication, in which-Figure lis a front elevation of the pianoplate with the hangers forcarrying the action attached; Fig. 2. a side eleva-tionot' one of saidhangers; and Fig. 3, the same, showing the bolt-sleeve in section.

My invention relates to the mode of fastening the action-hangers; andthe nat-ure of my said invention will be fully understood from thefollowing specification.

As shown in the drawings, A is the metallic plate commonly used forholding the strings; B, hangers for carrying the action; C, bolts xed inthe plate A for attaching the hangers thereto; D, sleeves or socketssurrounding the bolts O and interposed between the plate A and hangersB; E, strips secured to the hangers; F, the key-board attached to thebottom of the hangers.

The plate A is secured to the frame of the piano in the usual manner,and to it are attached, in the customary mode, the strings of theinstrument.

The hangers B,for the purpose of obtaining the greatest strength withthe least weight of material, are made ot' metal, substantially in theopen ornamental form shown in the drawings. At the upper end of eachhanger there is an eye, b, for receiving the bolt by which the hanger issecured to the plate A. The bolts C, of the kind commonly known asstud77 or standing77 bolts, may be either screwed into holes that aretapped in the plate A, or they may be secured in said plate by castingthem in-that is to say, by placing the bolts in their required positionsin the mold for the plate and then allowing the molten metal to involvethem in the process of casting.

The socket or sleeve D may be made of metal, wood, hard rubber, or othersuitable material. It should lit the bolt close enough to prevent anyjarring or rattling sound, and its length will be determined by thedistance required between the plate A and eye b of the hanger.

A nut, c, on the outer end of the bolt C binds the eye of the hangeragainst the end ot' the sleeve D, and secures the hanger firmly to itsrequired place on the plate A. The lowerI end, b, of the hanger issecured to the key-board F, to which and to the strip E the severalparts of the action may be xed in the customary manner.

When desired, either a greater or lesser number of hangers B than isshown in Fig. l may be used for securing the action to the plate A.

I am aware that upright piano-fortes have heretofore been constructedwith hangers for carrying the action, secured in place by means ofadjustable screws; but in that earlier construction the screws wereinserted in the wooden wrest-plank, and the adjustment was effected byturning the screws into or out ot' the wrest-plank, as occasionrequired.

I claim as my inventionl. The combination, with the metallic plate AAand hangers B, each provided with an eye,

Z), as described, of the stud bolts G, rigidly fixed in -the plate A,and the sleeves D, as and for the purpose herein specified.

2. In an upright piano-forte, the metallic plate A, provided with Xedstud-bolts C, the hangers B, and sleeves D, all combined and arranged asherein specitied.

ED WVARD MCOAMMON.

W'itnesses:

WILLIAM H. Low, G. A. HAMLIN.

